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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD78CP18(A)
8-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
The µPD78CP18(A) is a version of the µPD78C18(A) in which the internal mask ROM is replaced by one-time PROM.
The one-time PROM version can be programmed once only by users, and is ideally suited for small-scall of many
differnt products, and rapid development and time-to-market of a new product.
The detailed functions are descrived in the following user's manual. Read this manual before starting design
work.
87AD series µPD78C18 user's manual: IEU-1314
FEATURES
High reliability compared to the µPD78CP18
Compatible with the µPD78C11A(A), 78C12A(A), 78C14(A), 78C18(A)
Internal PROM: 32768 W × 8
• Internal PROM capacity can be changed by software to conform to the µPD78C11A(A), 78C12A(A), 78C14(A),
78C18(A).
PROM programming characteristics: µPD27C256A compatible
Power supply voltage range: 5 V ± 10 %
Supports QTOPmicrocomputer
5
Remark QTOP microcomputer is the generic name of NEC's single-chip microcomputers for which NEC
provides total service including writing, marking, screening, and inspection.
ORDERING INFORMATION
Part Number
µPD78CP18GF(A)-3BE
µPD78CP18GQ(A)-36
Package
64-pin plastic QFP (14 × 20 mm)
64-pin plastic QUIP
Internal ROM
One-time PROM
One-time PROM
QUALITY GRADE
Part Number
µPD78CP18GF(A)-3BE
µPD78CP18GQ(A)-36
Quality Grade
Special
Special
Please refer to “Quality grade on NEC Semiconductor Devices” (Document number IEI-1209) published by
NEC Corporation to know the specification of quality grade on the devices and its recommended applications.
Document No. IC-3233A
(O. D. No. IC-8702A)
Date Published March 1995 P
Printed in Japan
The information in this document is subject to change without notice.
The mark 5 shows major revised points.
© 11999943

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PIN CONFIGURATION (TOP VIEW)
A0/PA0
A1/PA1
A2/PA2
A3/PA3
A4/PA4
A5/PA5
A6/PA6
A7/PA7
PB0
PB1
PB2
PB3
PB4
PB5
CE/PB6
OE/PB7
PC0/TXD
PC1/RXD
PC2/SCK
PC3/INT2
PC4/TO
PC5/CI
PC6/CO0
PC7/CO1
A9/NMI
INT1
MODE1
RESET
MODE0
X2
X1
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
µPD78CP18(A)
64 VDD
63 STOP/VPP
62 PD7/O7
61 PD6/O6
60 PD5/O5
59 PD4/O4
58 PD3/O3
57 PD2/O2
56 PD1/O1
55 PD0/O0
54 PF7
53 PF6/A14
52 PF5/A13
51 PF4/A12
50 PF3/A11
49 PF2/A10
48 PF1
47 PF0/A8
46 ALE
45 WR
44 RD
43 AVDD
42 VAREF
41 AN7
40 AN6
39 AN5
38 AN4
37 AN3
36 AN2
35 AN1
34 AN0
33 AVSS
2

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µPD78CP18(A)
O3/PD3
O4/PD4
O5/PD5
O6/PD6
O7/PD7
VPP/STOP
VDD
A0/PA0
A1/PA1
A2/PA2
A3/PA3
A4/PA4
A5/PA5
51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
52 32
53 31
54 30
55 29
56 28
57 27
58 µPD78CP18GF(A)-3BE
59
26
25
60 24
61 23
62 22
63 21
64 20
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
AN4
AN3
AN2
AN1
AN0
AVSS
VSS
X1
X2
MODE0
RESET
MODE1
INT1
3